package com.best.condition;


import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.env.Environment;
import org.springframework.core.type.AnnotatedTypeMetadata;

/**
 * @author Jiang Akang
 * employeeId: BG435424
 * @date 2020/10/25
 **/
//判断是否linux系统
public class LinuxCondition implements Condition {

    /**
     * ConditionContext: 判断条件能使用的上下文(环境)
     * AnnotatedTypeMetadata: 注释信息
     *
     * @param context
     * @param metadata
     * @return
     */
    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
        //1、能获取到ioc使用的beanfacatory
        ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
        //2、获取类加载器
        ClassLoader classLoader = context.getClassLoader();
        //3、获取当前环境信息
        Environment environment = context.getEnvironment();
        //4、获取到bean定义的注册类
        BeanDefinitionRegistry registry = context.getRegistry();

        String property = environment.getProperty("os.name");
        if (property.contains("linux")) {
            return true;
        }
            return false;
    }
}
